/**
 * Copyright 2012 Anjuke Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.anjuke.romar.core.handlers;

import com.anjuke.romar.core.RomarRequest;
import com.anjuke.romar.core.RomarResponse;
import com.anjuke.romar.core.impl.request.PreferenceRomarRequest;
import com.anjuke.romar.core.impl.response.ErrorResponse;
import com.anjuke.romar.mahout.MahoutService;

public abstract class PreferenceBaseHandler extends BaseHandler {

    static final int DEFAULT_HOW_MANY = 5;

    public PreferenceBaseHandler(MahoutService service) {
        super(service);
    }

    @Override
    public RomarResponse process(RomarRequest request) throws Exception {
        if (request instanceof PreferenceRomarRequest) {
            return process((PreferenceRomarRequest) request);
        } else {
            return new ErrorResponse(ErrorResponse.RESOURCE_NOT_FOUND,
                    "Invalid Request Format");
        }
    }

    public abstract RomarResponse process(PreferenceRomarRequest request)
            throws Exception;

}
